 |
Universität Augsburg
|
|
|
Universität Augsburg
|
|
Herr Manuel Krannich Ph.D.
University of Cambridge
spricht am
Montag, 17. Dezember 2018
um
16:00 Uhr
im
Raum 2004 (L1)
über das Thema:
| Abstract: |
| By a result of Meyer, the signature of a closed topological manifold that fibres over an oriented surface with fibre $M$ is divisible by $4$. I will discuss a refinement of Meyer’s result in the case where $M$ is highly connected and almost parallelisable: for smooth bundles, this restriction causes the divisibility of the signature to grow at least exponentially in the dimension, whereas for topological ones, Meyer’s divisibility constraint is optimal up to a factor of $2$. This is partly based on joint work with J. Reinhold. |
| Hierzu ergeht herzliche Einladung. |
| Prof. Dr. Bernhard Hanke |
Kaffee, Tee und Gebäck eine halbe Stunde vor Vortragsbeginn im Raum 2006 (L1).